Improvement in window-screens



vnetting or screen-cloth, one end of which is AUGUSTUS ALTENBURG, OF BUFFALO, XORK, ASSIGNOR OF- ONE-HALF HIS RIGHT TO- CHARLES DAY, OF SAME PLACE.

didiROVEMENT IN WlNDGW-SCREENS. y

i Specification lforming part of Letters-Patent No. 154,538, 'dated September l, 18711; application tiled i January 26, 1874.

To all whom it may concern:

Beit known that I, AUGUSTUS ALTENBURG, of the `city of Budino, in the countyof Erie and State of New York, have invented a Self- Adjusting Fly and Mosquito Bar, of which the following is a speciication: 'l My invention relates to that `class of window-screens which consist of a piece of iiyattaehed to .the window-sash, and the other to a spring-roller revolving in bearings upon the 'window-jamie; and consists of a simple and cheap device for 'closing 'the aperture which'is produced between therolle'r and windowsill by the unrolling of the screen from the roller, in a manner to diminish the diameter'of the rolled-up screenr In the accompanying drawing, Figure I is a front elevation of part oa window. with my improved bar attached. Figa'll is a transverse vertical section of same.v v

The object of my invention is 'to improve the construction of the simplest and cheapest 'screen of the class above described, so that at very small additional expense any aperture occurring between the roller and window-sill may be eifectually closed.

The 'screen or netting A is represented in Figs. I and II as rolled up on the roller D.

The end'of the screen is connected to a metal or `Wooden slat, b, which is fastened, by means of the loop c, to the staple c in the window-sash S. ABywnnhoolring this loop from the staple, the :ily-bar .may readily be dison -nected from the sash whenever it is desired to open the window Without drawing up the ily-bar.

The roller D', to which the other end of the piece of nett-ing isattachued, is supported in bearings connected totlie jamb of the window. The roller revolves as the sash is raised, and the screen is unrolled from the roller.

The mechanism devised lfor automatically soiling up the screen, during the reverse mosion or closing-of the window, consists in spiral spring, g, one end of which is connected to the pin inaround which it is coiled, and the other end to a square peg or pin, i, All these parts are contained within the rellen D,

i one end of it being bored out a few inches for that purpose. The pin or pega' is driven into the solid part of the roller, upon the inner 'end of the hollow portion thereof, and revolves with the roller. The end ot' the pin h, which projects beyond the end of the roller, is made square, andi fits into a y corresponding socket,` formed in the plate 7s, which is firmly screwed to the side of the window-jamb S'. The. other and solid 'end of the roller D is provided with a central pin, l, having its bearing and revolving within'a circular opening in the plate m, attached to theopposite side of the windowjamb. Before' the roller is adjusted Within its hearings the square pin h is lrevolved in the direction of the arrow in Fig.

4"lL-Soverato gir/'ev the spring 'g 'thenecessary power to revolve the roller D in the oppositel direction when the window is closed.

All the parts hereinabove described are old devices, having been in use with various 'modiications. e

Now, in addition thereto I provide a Wedge' shaped rail or slat, as shown at N, which ein tends the entire width of the screen and roller, and, by means of the slotted guide-plates 0 O, may be moved back and forth in the direc tion ot' the roller, in such manner that the edge of the rail N may enter, and the body thereof fdl, the space produced by the unrolling or raising of the screen between the roller and the window-sill. The rail may either he moved by hand, or an automatic movement maybe produced .by the application of a small rubber orY other spring, such as shown at p, Figs. I and II. f

The advantages of my improvement are obvious.

When flynetting or screen material is attached to the sash, and its edges are in close contact with and behind the windowstops, then the entire area below the raised sash is completely covered by the screen, with the exception vof the space below thc roller, which aperture grows larger as the screen is raised and unrolled from the roller. In order it, whether it is moved by hand or supplied v with springs for itsautomatic adjustment, the

covering with a screen of the entire area be-V The 'movable AWedge-shapd Slat N with the low a raised sash is accomplished in a much spring' p', in combination with thc roller l) cheaper and-simpler manner than 11a-s ever mrd fly-screen X,-for the.purpose herein set 'heretofore been done. 'Y forth.`

. 'I'donot claim the construction and opera# v tion ofa y-screenupou a spring-roller, or vits AUGUSTUS ALTENBURG' 'attachment tothe sash of a window, as I aml f- Witnesses@ .awarefthat'these'devices are old; but j `GrEoRGrE E. FEM.,A 

